Yarn cutter and holder mechanism for circular-knitting machines.



H. L. TRUDEL & H. B. DAWSON.

YARN CUTTER AND HOLDER MECHANISM FOR CIRCULAR KNITTING MACHINES.APPLICATION FILED DEC. 5. I912.

1,2%8,g@6. I Patented Nov. 27, I917.

3 SHEETSSHEET I.

.L5Z\ v b-J u I I V 5 H. L. TRUDEL & H. B. DAWSON. YARN CUTTER ANDHOLDER MECHANISM FOR CIRCULAR KNITTING MACHINES.

APPLICATION FILED DEC. 5. IQIZ. Lg%8,2@6. Patented Nov. 27, 191.7.

3 SHEETSSHEET 2- H. L. TRUDEL 64 H. B. DAWSON.

YARN CUTTER AND HOLDER MECHANISM FOR CIRCULAR KNITTING MACHINES.

APPLICATION FILED DEC. 5. I9I2.

LQQSQCIG. Patented Nov. 27, 1917.

3 SHEETS-SHEET 3- iUIWJPJED enemas Pannier @FFIQE.

HENEYL. 'rnnnnr. AND nowaan a. nawson', or rrswrcn, ranssncn'csn'rrs,nears-rt ons, BY ransnn ASSIGNMENTS, To see RATION QB MASSACHUSETTS.

'I'T dz WELLIAMS, INCQRPUEt-ATED, .EtCORPQ YARN CUTTER AND I-IOLDERMECHANISM FOR CIRCULAR-KNITTING raacnrrrns.

Specification oi Letters Patent.

Patented Nov. 25?, 19312;

Application filed December 6,1812. Serial No. 735,120.

To all whom it may concern:

Be it known that we, HENRY L. Tnnonn, a subject of the King of GreatBritain, and HOWARD B. DAWSON, a citizen of the United States, residentsof Ipswich, in the county of Essex and State of Massachusetts, haveinvented certain new and useful Improvements in Yarn Cutters and HolderMechanisms for Circular-Knitting Machines, of which the following is aspecification.

Our invention relates to circular knitting machines, and particularly tosuch machines as are organized to knit sectionally spllced tubes,.forinstance stocking machines organized to knit a stocking having a highspliced ankle or spliced sole, but in which it is in tended to knit theinstep or top of the foot of unspliced or single-yarn fabric.

One object of our invention is to provide a clamp and holder mechanismfor a yarn removed from active engagement with the knitting needles ableto operate efiectively on a yarn which is knit during a part of a courseonly as a splicing yarn, and to this end our device provides a cuttervand clamp or holder device applicable to cut the yarn at least once ineach revolution of the machine, at a point very close to the fabric, andto hold a yarn so cut ready to be again inserted duringthe nextsucceeding revolution or part revolution.

Further objects of our invention are to provide an eflicient device forthis purpose, and means to operate it, of such. a character as to avoidthe encumbrance of any of the existing parts of the machine, andparticularly to avoid the necessity of interfering with the device whenthe latch guard ring is to be lifted for access to the needles.

Other objects are to secure the eflicient au tomat-ic operation of thedevice in time with the automatic operations of the knitting machine towhich it is applied, and the automatic positioning near the fabric, andremoval. therefrom, of the cutting implements.

plete understanding of the entire machine, only so much of which isshown and described in the present application as is necessary to makeclear the application of our invention to the machine 1mproved.-

In the accompanying drawings,

Figure 1 is a left side elevation of a part of a machine built accordingto the disclosure of the said patents, showing our improvement attached;i

Fig. 2 is a right side elevation of said machine showingthe latch ringelevated, as for the transfer of a rib top;

Fig. 2 is a detail front elevation of the left hand end of the cam orpattern shaft,

such as the shaft 8 in the said Patent No.

Fig. 3 is a plan view of the knitting head showing our device in place;

Fig. 4 is a section on the line 4-4 of Fig. 3 showing the cutter andclamp proper in its active position; I

Fig. 5 is an elevation similar to Fig. 4 showing the cutter and clampremoved from the neighborhood of the needles and the forming edge of thefabric;

Fig. 6 is a detail of the cutter showing the opposite side from thatshown in Figs. 4 and 5; I

Fig. 7 is an enlar ed view of the cutting and clamping mem ers viewedfrom the central axis of the machine;

Fig. '8 is a detail perspective of the cam for actuating the cutter andclamp.

The frame of the machine 10 supports a ,main driving shaft 11 andapattern or cam shaft 12, which latter derives its working As is wellknown in the art and specifically shown in the patents above referredto, said shaft '12 is given a movement through a variable angle ofadvance by means controlled by a pattern chain carried upon, but notattached to, said shaft 12. This pattern chain, which is well known inthe art and is not shown, may be constantly advanced by a ratchet motionactuated from the shaft 11, and carries lugs to determine the times andextent of the angular movement of the shaft 12. In the orderly operationof the said old art machines, the shaft 12 is actuated machine,

I in grooves upon the exterior through one complete revolution duringeach complete cycle of the machine, for mstance during the production ofone com plete stocking.

The frame 10 is surmounted by a table 5, which projects at the left handside of the which is that shown in Fig. 1, and upon this projection, ina bearing formed therein, the rotary needle cylinder 13 rests.Independently movable needles 14 are guided of the needle cylinder, asusual, under the influence of cams carried by a cam ring 6, all as insaid Banner machine.

Fastened to the upper end of the needle cylinder is the usual sinker bedor ring 15; and having a bearing upon sa1d rmg, but restrained fromrotation with it, except through a limited arc, is the smker cam ring16. P

Immediately above and concentnc with the needle cylinder is mounted thelatch guard ring wardly on the horizontal pivot 171 in the top of astandard 172 mounted on the bed plate 5.

The latch ring 17 when it is in its horizontal or o erative positionrests. upon a projection rom a hollow standing 51 directly over thedriving shaft 11.

Yarn is ried by the rotating needle cylinder through an opening orthroat in the latch guard ring 17, formed therein at the point about thecircle nearest the standard 51, which point is at the gross location ofthe wave formed in the needles by the cams carried by the cam ring 6. Ina radial slot in a projection formed integrally with the ring 17, whichslot communicates with the yarn throat or opening above mentioned, aplurality of independently movable yarn guide levers, shown as three innumber, 18, 19, and 20, are pivoted on an axis above and outside of thecircle of needles, so that the elevation of one of said guide leverswill carry its inner perforated end above and to the inside of thecircle of needles 14:, in the same manner as in the, said Bannermachine.

Also as in said Banner machine secondary levers 181, 191 and 201cooperate with the yarn guide levers 18, 19', 20 to elevate them toremove the yarn from its operative position, the said levers 18, 19 and20 being spring-actuated to return them to their operative positions.The automatic actuation of the leversv 181, 191 and 201 is accomplishedin said machine by cams 24 carried by the cam shaft 12, which cams are,therefore, re-

lated to the time of the operations of mak-v ing the stocking, as hasbeen indicated.

lhe said cams 24: act on levers 23 which are connected by wire links 232to the outer ends of said levers 181, 191 and 201. It will be seen thatthe use. of the yarn levers may.

17, which is free to be swung upfed to the rotating needles carbe variedfor man diiferent purposes, but

in the machine as s own levers 18 and 19 are employed to change theyarnfor the leg of the stocking andfor the heel and toe respectively,leaving the lever 20 to be spe-. cially actuated by lever 201 for thesplicing operation, with which our new devices are particularlyconcerned.

A familiar form of the said Banner machine now in use employs for thesaid special actuation of the lever 20 a cam 241, properly placed on thecam shaft to bring it into action at a point considerably above theankle of the stocking, while the machine is still upon circular work,and before the operation of narrowing and widening has begun. This cam241, through a lever 231,

' bell crank lever 60 actuated by a plate spring 61 is independentlyconnected to the lever 201 by an adjustable wire link 62, similar to thelinks 232, having a bend or loop to take over lever 201, which is thusprovided with two links. The link 62 is passed loosely through a bore inlever 60, and adjustably held by a nut screwed on its lower end, heneathsaid lever 60. Whenever the cam 241 permits the lever 201 to descendunder the influence of the spring of the yarn guide lever 20, the bellcrank lever 60 will be thrown against the cam 59, whichwill thus actuatethe lever 201 and its yarn guide lever 20 twice during each revolutionof the machine, to allow the splicing yarn carried in the bore in saidlever 20 to be taken by the needles during substantially one-half a revolution. When it is no longer desired to highsplice the stocking, the cam241 acts upon lever 231 to cause the lever 201 to hold the lever 20 inits elevated position.

The upward-and inward movement of the inner end of a yarn guide leverwhen actu-- ated to change the yarn or to take out of work an additionalyarn, which has been knitting, carries the yarn thus rendered idle aboveand to the inside of the circle of neeaeaeoe them in detail except asthey appear in Fig. 3 in connection with the devices about to bedescribed.

The said rior clamping and cutting means cannot be relied upon tooperate with any certainty when it is proposed to operate the yarnguides at each revolution of the machine, and especially when it isproposed to operate one of them to enter its yarn into work and take itout again during 180, more or less, of the revolution of the needlecylinder. Persistent operation of a yarn guide to this effect creates aseries of diametrically extending float yarns which are diiiicult totake care of by devices occupying a central position in the open top ofthe needle cylinder. This condltion is due to the relatively small slackto be found in the diametrically extending float as it would appear froma yarn guide normally operated to splice half the tube, without the intervention of an internal clamp or cutter. On the other hand, if slackis specially created by the clamp and cutter device, it becomesdiflicult to cut the yarn, especially at a point remote from the lastknit loop atwhich it was attached to the fabric. In order to providemeans for obviating the above difliculties,

we have mounted on the latch guard ring at about 30 to the rear of theyarn feed point in the direction for rotary work a bracket 103 to carryabove and slightly outside of .the latch guard ring in a radialdirection a pivot screw 104 upon which is mounted a positioning memberpreferably formed as a lever 105 having an outwardly extending toe 106.Screwed on the inner end and forming a part of the member 105 is anL-shaped member 107 whose inner arm reaches downwardly inside of thelatch ring to a position within and near the backs of the needles whenthe lever 105 is in the depressed position shown in Fig. 4. That face ofthe lL-shaped member toward the backs of the needles is provided with anotch 108, and on the side away from the yarn guides an angular foot oranvil 109 is formed integrally therewith, to receive the yarn andsupport it against the cutting thrust of a movable chisel or shear blade110, the cutting edge of which is V shaped.

Movements of the lever 105 about its pivot 104 are for the purpose ofbringing the notch 108 and the severing device, including the anvil 109and movable blade 110, to a point very near the backs of the needles andthe forming edge of the fabric thereat. To limit this movement, weprovide on the lever 105 a pin 111 taking through a slot 112 in thebracket 103. The pin 111 also serves to receive the thrust of a spring113 tending to'lift the depending end of the fixed member of thesevering device inward and away from the needles.

,machine terminates in a, toe 119 at one side of and near the toe 106 ofthe lever 105.

Fixedly mounted on the bed plate of the under the outer end of thecompound lever made up of the parts 117 and 104 is a hollow post 125 inthe upper end of which is housed a plunger 126 under upward stress froma relatively strong spring 124. Through a slot 127 in the wall of saidhollow post a pin 128 fast in the plunger 126 projects toward the axisof the knitting cylinder.

Surrounding said post is a sleeve 130 having a slot 131 coincident withthe slot 127. A link 132, presently to be described, is fastened by ascrew 133 to the sleeve 130. A collar on the top of the link 132restrains a relatively strong spring 135, which tends to move the sleeve130 and its attachments upwardly.

The plunger 126 is limited in its upward movement by the top of the slot127 which takes against the pin 128.

A finger 139 is adjustably held between two jam nuts on the reduced andthreaded upper end of the plunger 126, and the sleeve 130 carries at itsupper end a lug 140 having an adjusting screw 141 for contact with thetoe 106 of the lever 105. The finger 139 contacts with the toe 119 oflever 117. Under the free stress of both springs 124 and 135 acting uponand moving upward the screw 141 and the finger 139 respectively.

against the relatively weak springs 113 and 143 the depending L-shapedmember 107 is moved downwardly and outwardly to the position of Fig. 4,which position is detormined by slot 112 and pin 111 as above explained, and the movable blade 110 is closed upon the anvil 109. If nowthe plunger 126 is moved downwardly, the position of the lever 105" willnot be altered, but the lever 117 will be thrown upward by the lightspring 143 to lift the blade 110 and uncover the slot 108. The reversemovement of blade 110 is caused, to effect clamping the yarn in thenotch 108 between the face of the member 107 and blade 110. and cuttingit against anvil 109, whenever the spring plunger 120 is permitted tomove upward. The cutter may, therefore, be {ICU}: ated by moving the pin128 down in the slot 127, and then releasin it, and the severingmechanism as a whol e may be positioned near the work, or away from it,toward the center of the-machine, by movement of the sleeve 130.

\Vhen the sleeve 130 is sufiiciently depressed, for instance when it isin the position shown in Fig. 5, the top of the slot 131 contacts withthe pin 128 and prevents the rise of the spring plunger 126.

Surrounding the head of the needle cylinder 13, and fast on the sinkerbed 15, and therefore rotating with the needle cylinder and needles, wemount a cam 50 which moves in a path intersecting the upward part of thepath of movement of the pin 128, except when the upward movement of thesaid pin is-restrained by the sleeve 130.

It will be understood that the part of the cam 50 active to cut the yarncan be located with accuracy with respect to the needles and the fabricformed thereby, the cam 50 being adjustably fixed with respect to theneedle cylinder 13.

During the knitting of the leg of the stocking, which takes place athigh speed, and sometimes results in bellying upward of the beginning ofthe leg before there is suflicient weight of formed fabric to cause itto pass smoothly downward inside the cylinder, it is very desirable tokeep the region back of the needles free of any fixed parts, which mightengage the fabric and result in damage. On the other hand, a cuttingdevice to satisfactorily out yarns taken out of work necessarily mustoperate close to the back of the needles and the fabric at the moment ofits operation. We avoid this danger and enable our device to cut theyarns with the least possible separation of the cutting-point from theback of the fabric, by automatically removing the cuttingpoint, at theanvil 109, from near the needles, and returning it to this position, atthe end and the beginning of the splicing operations, by means of themovable lever 105, its cooperating parts, and a connection to thepattern shaft 12.

The said connection comprises the link 132, extending downwardly througha bore in the bed-plate 5 to one end of a lever 145, pivoted on a stud146 on the left side of the machine frame.

The other end of lever 145. rests upon a cam disk 147 secured on theouter or left end of the shaft 12.

On the periphery of the disk 147 a cam 148, following the splice abovethe ankle, and a cam 149, following the splice along the sole, aresecured. The rotative position of these cams is such as to bring themunder the end of lever 145 in time with the active position of the othercontrol elements, on shaft 12, for the same parts of the stocking.

In operation, the end of the lever 145 rests upon the cam face 149 ofgreatest radius of disk 147 during theknitting of the leg of thestocking, holding the sleeve 130 in its lower position, shown in Fig. 5,thus permitting lever 105 to hold the L-shaped member 107 in thewithdrawn position shown in said figure, and also preventing springplunger 126 from rising to place pin 128 in the path of cam 50.

Lowering of lever 145 by the passage of cam 148 or 149 will permit lever105 to descend to permit member 107 to be positioned near the fabric,and will permit plunger 126, and therefore blade 110, through the anismjust before the guide 201 begins to act, and so as to cause said leverto remain in this position until after cam 241 has operated to cause thesplicing yarn guide to cease feeding its yarn.

When it is desired to elevate the latchring 17, for access to theneedles, as when about to transfer a rib-top to the needles, there areno fixed connections to be removed, the foot 119 and thefoot 106, whichare the actuated parts, resting loosely upon the finger 139 and screw140, so that the latchring is free to be elevated, and again lowered,thus breaking and again making the connection between the yarn severingdevice and its operating parts, without requiring the attention of theoperator.

What we claim is:

1. A knitting machine having in combination a yarn severing implementfor severing a yarn withdrawn from knittingat the back of the fabric andnear the point of exit of said yarn, and means for moving said yarnsevering implement into and out of proximity to the forming fabric.

2. In a knitting machine, means to sever at the backof the needlesandnear the point of exit from the fabric a yarn withdrawn fromknitting, in combination with means for removing said severing devicefrom its place for action at predetermined times.

3. A circular knitting machine, having means to sever a yarn withdrawnfrom knitting at the back of the fabric within the needles and close tothe point of exit from the fabric of said yarn, comprising a severingimplement and clamp for the severed yarn, in combination with means formoving said implement and clamp toward and away from the fabric atpredetermined times.

4. A knitting machine having means for severin a arn withdrawn fromknitting at the back of the fabric and near the point of lit 1 x exit ofsaid yarn comprising a yarn severing implement and means for moving saidimplement into and out of proximity to the forming fabric, and means foroperating said implement to sever the yarn while in. proximity to theforming fabric at the back of the needles.

5. A knitting machine having a yarn severing and clamping implement anda sectional splicing yarn feed device, means to actuate said implementto sever, clamp and release the splicing yarn, in combination withautomatic means for bodily removing said implement from its workingposition at predetermined times during knitting of unspliced fabric.

6. A knitting machine having a yarn severing and clamping implementnormally in working position near the fabric and a splicing yarn guide,means for actuating said implement when in said position and foractuating said yarn guide at related times at similar intervals, torelease and supply and to remove, sever and clamp the splicing yarn atthe edges of a spliced area, in combination with means operating atrelatively infrequent intervals for bodily removing said implement fromworking position and for causingcessation of operation of saidyarn-guide.

7. A knitting machine having in combination a needle cylinder andneedles, a yarn guide and means for moving said yarn guide to enter andwithdraw a splicing yarn, and means to sever said yarn within theneedles and near its point of attachment to the fabric, and automaticmeans for moving said severing means to and from its operative position.

8. In a knitting machine, a movable yarn guide, means to move said guideinto and out of operative position, knitting needles, and means toactuate them; in combination with means to cut and hold the yarn fromsaid yarn guide when in an inoperative position, and means to move saidcutting and holding means to an'inoperative position with respect to theyarn guide and needles at predetermined times.

9. In a knitting machine, yarn feeding means including a yarn guide andmeans to render it active or inactive at predetermined times, a yarnsevering device, means permitting said yarn severing device to be movedfrom an active to an inactive position, and the opposite, and means tomove said yarn severing device to an active position when the yarn guideis about to be actuated.

10. A circular knitting machine having in combination, needles, asplicing yarn guide, means to hold said guide idle during a plurality ofcourses, and to operate said guide for sectional splicing, yarn severingand holding means, and devices for positioning at said yarn severing andholding means withneaaaoa in the needles and near the forming fabricduring actuation of said yarn guide, whereby to receive and sever thesplicing yarn close to the forming fabric when said yarn guide iswithdrawn and to deliver the sev-' cred end of the yarn close to anotherpart of the fabric upon the reentrance of said guide to operation.

11. In a knitting machine, and means for moving said yarn guide to feedand Withdraw its yarn at intervals, a yarn severing device, and meansfor movin said device at intervals of a plurality of movements of saidyarn guide into and out of position to encounter a yarn withdrawn bysaid yarn guide.

12. In a circular knitting machine, in combination with a rotary needlecylinder, a movable yarn guide and means for operating said guide toinsert and withdraw a splicing yarn from and to the space within theneedles at each revolution of the machine during a predetermined numberof such revolutions, severing and holding means for the yarn movableinto and out of position to sever and hold the splicing yarn at a pointnear the place of its withdrawal from the fabric, and means to move saidseverin means into and out of "its working position,

13. In a circular knitting machine, a rotary needle cylinder, a movableyarn guide and means for operating said guide to insert and withdraw asplicing yarn at each revolution of the machine during a predeterminednumber of such revolutions, in combination with severing and holdingmeans for the yarn movable into and out of position to sever and holdthe splicing'yarn at a point near the place of its withdrawal from thefabric, means to move said severing means into and out of its workingposition, and means to operate said severing means while in its workingposition at each passage of said place'in the fabric.

14:. In combination in a knitting machine, a rotary needle cylinder, asplicing yarn guide and means to operate it to enter and remove asplicing yarn, a relatively fixed cutter and holder for the splicinyarn, and means rotating with said need e cylinder for actuating saidholder to release the yarn at or near the time of passage of the fabricat the point of entry of said'splicing yarn, and means for removing thecutting and holding mechanism from the neighborhood of the fabric.

15. In a knitting machine having a yarn guide, means to actuate saidyarn guide at relatively short intervals for sectional splicing and apattern mechanism controlling said yarn guide for said purpose, incombination with means acting to sever the yarn when said yarn guide isin an inoperative position, positioning and operating a yarn guidemembers for said severing means, and means under the control of saidpattern mechanism for preventing operative movement of said positioningand operating members at predetermined times,

16. In a knitting machine, a series of yarn guides and means to actuatecertain of them-for yarn changing, a yarn clamp and yarn severing meansfor severing and holding a yarn withdrawn from knitting by one of saidyarn guides, in combination with means for actuating one of said yarnguides for sectional splicing and a severing device of said yarn guides,in combination with means for actuatingone of said yarn guides forsectional splicing and a severing device operative to sever the splicingyarn only.

19. A knitting machine having a series of yarn guides and means toactuate certain of them for yarn chang ng, and one of them Mia severingdevice for any of the yarns m-' cli 1ding the splicing for sectionalsplicing, in combination with yarn operative to sever a1yarnwithdrawn atthe completion of the ;;.,1part of the fabric including 40 ing yarn onl7 said yarn, and another severing device acting on the splic- 20. Aknitting machine having in combination means for feeding and withdrawinga plurality of yarns in succession, common means for severing andclampin said yarns when withdrawn, means for eeding and withdrawing oneof said yarns during each course knit, and other severing means adaptedto sever said yarn when so withdrawn.

21. In a circular knitting machine, a series of yarn guides, means foractuating certain of said yarn guides to exchange the1r yarns,

and means to sever and clamp a yarn withdrawn from knitting thereby, incombination with means for actuating one of said yarn guides to withdrawand again enter another yarn in the same course, and a yarn lease saidother yarns at points close tosaid severing and holding devicecoiiperatin with said otheryarn at the places of sai withdrawal andentrance to cut and to replaces,

22. A circular knitting machine having in combination needles a yarnfeed mechanism comprising 9. mm 1e yarn guide adapted to be thrown intoand out of operation, a positioning member within and at the backs ofthe needles, means carried by said member for severing the yarn from'said yarn guide, and mechanism for moving said member to positionsaidsevering devlce near the fabric, and to withdraw said device fromproximity to" the fabric during operation of the machine.

' 23. A circular knitting machine having in combination needles, 3. yarnfeed mechanism com risingjmovable yarn-guides, one of whlch is adaptedto be thrown out of operatlve position to withraw its yarn within andtoward the backof the needles and fabno, a positioning lever dependingwithin and at the backs of the needles, means for sever-mg and clampingthe am from said yarn gulde, carried by said ever for movement into andout of proximity to the fabric, an operating lever for said severing andclamp ng means, means for moving said pos1t1omng lever, and means foractuating said operating lever when said severing device is in proximityto the fabric.

24..A circular knitting machine having needles, means for feeding andwithdrawing a plicing yarn and a splicing yarn severing devlce comprlsmga positioning member for moving said severing device into and out ofproxlmlty-to the knit fabric, an operating member for said severingdevice, and pattern-"controlled connections for moving said positioningmember in combination with means for actuating said operating memberwhen said severing device is positioned in proximity to the fabric only.

25. A circular knitting machine having in combination a needle carrierand needles, a cam-carrier and cams, and means causing relative rotationof said carriers, means for feeding and withdrawing a splicing yarn, andasplicing-yarn severin' and clamping device comprising a'positioninglever carry- 1ng sald severing device and an actuating lever therefor, apattern operated connection for moving said positioning lever, and meanshaving a part rotating with said rotary carrier for actuating saidoperating lever when said positioning lever i in one position only.

26. In a knitting machine, needle and cam cylinders, independentlymovable knitting needles in said needle cylinder, a. latch guard ringsurrounding theprojected positionof said needles, yarn-guide leversmounted on said latch ring, and independently movable with respectthereto, and with respect to the needles, yarn severing means to severthe yarn from a yarn guide in an inoperative position and actuatingmeans therefor comprising means relatively fixed with respect to theneedle cylinder and means to remove the severing means from theneighborhood of the needles and to cause the actuating means to cease tooperate.

aaaaoe 27. In a knitting machine, a cam cylinder, a needle cylinder andneedles therein, a latch guard ring surrounding the position of projected needles, a series of yarn guide levers,a

pattern shaft and means operated by said shaft to control the positionof the yarn guide levers, in combination with a yarn severing devicemounted on said latch ring for movement with respect to the needles,means independent of said latch ring for moving said severing devicetoward and away from the backs of the needles and means actuated by saidpattern shaft for operating the means for moving the severing device.

28. In a knitting machine, a needle cylinder and needles therein, a yarnguide lever, a pattern shaft and means operated by said shaft to controlthe position of the yarn guide lever in combination with a yarn severingdevice mounted for bodily movement with respect to the needles about ahorizontal aXis, means for moving said severing device toward and awayfrom the backs of the needles about another axis and means actuated bysaid pattern shaft for operating the means formoving the severingdevice.

29. In a knitting machine, a needle cylinder and needles therein, a yarnguide lever, a pattern shaft and means operated by said shaft to controlthe position of the yarn uide lever in combination with a yarn severingdevice mounted for bodily movement with respect to the needles, means infree contact with a part of said severing device when said device is inone position for moving it toward and awayvfrom the backs of the needlesand means actuated by said pattern shaft for operating the means formoving the severing device.

30. In a knitting machine, a cam cylinder, a needle cylinder and needlestherein, a latch ring surrounding the position of projected needles andpivoted at one Slde so as to permit it to be elevated away from theneedles, a series of yarn guide levers on said latch rlng, a patternshaft and means on said shaft to control the position of the yarn guidelevers, in combination with a yarn severing device mounted on said latchring for movement with respect to the needles, and means controlled fromsaid pattern shaft having an element upon which a part of the severingdevice rests for moving the severing device toward and away from theneedles when the latch guard ring is in its operative position.

31. In a yarn severing mechanism for circular knitting machines, aneedle cylinder, a latch guard ring, a lever pivoted on said latch guardrin comprising a depending fixed cutter and 0 amp member having thereina notch for the yarn to be cut and clamped, a spring to lift thedepending end of said member to a position upwardly and inwardly awayfrom the needles, a movable cutting blade mounted on said dependingmember, an actuating lever therefor, means to depress said dependingmember to an active position at the backs of the needles and near theedge of the forming fabric comprising a post on the bed plate of themachine, a plunger in id post, a sleeve surrounding said post, adaptedin one position to contact with and limit the movement of a part carriedby said plunger, a cam fast to the needle cylinder for operating saidplunger, pattern controlled means to operate said sleeve, and means onsaid plunger to contact with the actuating lever for the cutter blade.

In testimony whereof, we have signed our names to this specification inthe presence of two subscribing witnesses.

HENRY L. TRUDEL. HOWARD B. DAWSON. Witnesses:

GEORGE W. HAYEs, WALTER E. HAYWARD.

